I am working on a project to Replace R22 in multiple medium and low temperature evaporators in a commercial enviroment. After much research i have found that no-one seems to have any distinct answers to this quirey. The nearist i have come to a replacement is R417A, however it seems this is used mainly for a/c systems. Could this possibly be used as a sutiable replacement and if not could anyone surgest any others? I would greatly appreciate some feedback. Thank you

Bradley SD
BJA trainiee Refrigeration design engineer